Luna is truly a rarity amongst the cotton offerings from the larger yarn companies - a true multi-ply, worsted weight cotton yarn. It is slippery but not overly so on the hook/needles, and it doesn't split. The colors are vibrant and the twisted plies make it luxurious to work with compared to rougher one ply yarns.
I love that it is also a true worsted weight. Both Blue Sky Alpacas and Classic Elite make multi-ply cottons that are great as well, but Blue Sky's is really an aran weight sold as worsted, and Classic Elite's called Seedling is a DK weight.

Following up on a sweater from Cascade Lima, I liked the texture and working with it, but the sale yarn had lots of knots & as a twined single ply, not so good for splicing, so joins were tied
at end of rows, and I needed more yarn.
But the sweater was so successful, so
comfortable to wear, warm yet light
that I really want to recommend this yarn. Such a pleasure.